Bi2MoO6 (BMO) via the structure-directing role of CO(NH2)2 is successfully prepared via a facile solvothermal route. The structure, morphology, and photocatalytic performance of the nanoflake BMO are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), fluorescence spectrum analysis (PL), UV-vis spectroscopy (UVvis) and electrochemical test. SEM images show that the size of nanoflake BMO is about 50 ~ 200 nm. PL and electrochemical analysis show that the nanoflake BMO has a lower recombination rate of photogenerated carriers than particle BMO. The photocatalytic degradation of tetracycline hydrochloride (TC) by nanoflake BMO under visible light is investigated. The results show that the nanoflake BMO-3 has the highest degradation efficiency under visible light, and the degradation efficiency reached 75 % within 120 min, attributed to the unique hierarchical structure, efficient carrier separation and sufficient free radicals to generate active center synergies. The photocatalytic reaction mechanism of TC degradation on the nanoflake BMO is proposed.

Abstract
1. Introduction
2. Experimental
    2.1 Materials
    2.2 Preparation of bismuth molybdate
    2.3 Characterization
    2.4 Photocatalytic experiments
3. Results and Discussion
4. Conclusions
References

• Pengwei Hu(Anhui Key Laboratory of Advanced Building Materials, School of Materials Science and Chemical Engineering, Anhui Jianzhu University)
• Dewen Zheng(New Energy Research Center Research Institute of Petroleum Exploration and Development (RIPED))
• Yuxi Xian(CAS Key Laboratory for Mechanical Behavior and Design of Materials, University of Science and Technology of China) Corresponding author
• Qian Zhang(New Energy Research Center Research Institute of Petroleum Exploration and Development (RIPED))
• Shanyu Wang(New Energy Research Center Research Institute of Petroleum Exploration and Development (RIPED))
• Mingjun Li(Anhui Key Laboratory of Advanced Building Materials, School of Materials Science and Chemical Engineering, Anhui Jianzhu University)
• Congliang Cheng(Anhui Key Laboratory of Advanced Building Materials, School of Materials Science and Chemical Engineering, Anhui Jianzhu University)
• Jin Liu(Anhui Key Laboratory of Advanced Building Materials, School of Materials Science and Chemical Engineering, Anhui Jianzhu University)
• Ping Wang(Anhui Key Laboratory of Advanced Building Materials, School of Materials Science and Chemical Engineering, Anhui Jianzhu University)